123895009

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 143503360

約数和(自身を除く): 19608351

約数列:

[1, 7, 139, 223, 571, 973, 1561, 3997, 30997, 79369, 127333, 216979, 555583, 891331, 17699287, 123895009]

約数ペア:

[(1, 123895009), (7, 17699287), (139, 891331), (223, 555583), (571, 216979), (973, 127333), (1561, 79369), (3997, 30997)]